{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VRF5WZTWMLCXZM44LM4MOOVHIA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ffa5e792fdb0682be0c514a2cd6da26b6e87451acf0424ddef376c3d1bb995eb","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-10T01:38:09Z","title_canon_sha256":"bced403663f8dee036bef47eb49c55d80404efc404f57725e0b4ac7ecde79f58"},"schema_version":"1.0","source":{"id":"1908.03662","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.03662","created_at":"2026-07-05T00:31:55Z"},{"alias_kind":"arxiv_version","alias_value":"1908.03662v1","created_at":"2026-07-05T00:31:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.03662","created_at":"2026-07-05T00:31:55Z"},{"alias_kind":"pith_short_12","alias_value":"VRF5WZTWMLCX","created_at":"2026-07-05T00:31:55Z"},{"alias_kind":"pith_short_16","alias_value":"VRF5WZTWMLCXZM44","created_at":"2026-07-05T00:31:55Z"},{"alias_kind":"pith_short_8","alias_value":"VRF5WZTW","created_at":"2026-07-05T00:31:55Z"}],"graph_snapshots":[{"event_id":"sha256:502133861a0ea35a9689ae790db89c27d8fdad41ca367648ea465947dadc0a67","target":"graph","created_at":"2026-07-05T00:31:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1908.03662/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fingerprint spectral response of several materials with terahertz electromagnetic radiation indicates that terahertz technology is an effective tool for sensing applications. However, sensing few nanometer thin-film of dielectrics with much longer terahertz waves (1 THz = 0.3 mm) is challenging. Here, we demonstrate a quasi-bound state in the continuum (BIC) resonance for sensing of nanometer scale thin analyte deposited on a flexible metasurface. The large sensitivity originates from strong local field confinement of the quasi-BIC Fano resonance state and extremely low absorption loss of a lo","authors_text":"Madhu Bhaskaran, Manoj Gupta, Rajour Tanyi Ako, Ranjan Singh, Sharath Sriram, Yogesh Kumar Srivastava","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-10T01:38:09Z","title":"Terahertz sensing of 7nm dielectric film with bound states in the continuum metasurfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.03662","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e35405a472320d255159eca238bc6d7cd4d50c36cfab4fdf643623530a927b2e","target":"record","created_at":"2026-07-05T00:31:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"ffa5e792fdb0682be0c514a2cd6da26b6e87451acf0424ddef376c3d1bb995eb","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-10T01:38:09Z","title_canon_sha256":"bced403663f8dee036bef47eb49c55d80404efc404f57725e0b4ac7ecde79f58"},"schema_version":"1.0","source":{"id":"1908.03662","kind":"arxiv","version":1}},"canonical_sha256":"ac4bdb667662c57cb39c5b38c73aa7403d4ac95b8e151a73d213500209e9d20c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac4bdb667662c57cb39c5b38c73aa7403d4ac95b8e151a73d213500209e9d20c","first_computed_at":"2026-07-05T00:31:55.063140Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:31:55.063140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jiJFuwcU1p3l5jVtkphcJd4pu7OxtXS5HlACs5Gt9dI6zTuTxmg27c+6Dxg8/7CrnvA09cuCFhrzEage8gmODQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:31:55.063543Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.03662","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e35405a472320d255159eca238bc6d7cd4d50c36cfab4fdf643623530a927b2e","sha256:502133861a0ea35a9689ae790db89c27d8fdad41ca367648ea465947dadc0a67"],"state_sha256":"71244aa4ebc80ed979dd98adeb285d3c13a624552af80dd70e57b80b49951f77"}